First off, 1HD creatures ALWAYS die in one hit. The bards had nothing to do with that.
No, they don't, when attacked by 1HD creatures. Seriously, do your first level characters always die to the first attack? Come on man, you should know better. Sometimes that longsword rolls low.
Furthermore, as you quoted, I said "when we've already mentioned the bardic support that makes it so the level 3s die in one hit anyway?" That's the 3HD creatures dying in one hit. In fact, since the bards were adding +2 regular damage, +1d6 fire, +1d6 cold, +1d6 acid, and +1d6 electricity, the average damage from a shot was increased by 16, enough to easily TKO the 3 HD guys. 20 becomes the average number. So, instead of one hit maybe killing a 1HD creature, now 1 hit always kills a 1HD creature, and 3HD creatures go down just as fast most of the time. So yes, it was the bards doing that. Come on man, you even bolded the relevant part.
Second off, PC classes are reserved for PCs.
Seriously, you've been missing the mark on the rules constantly. Please review the DMG, in the section on NPC bards, clerics, and in fact every other PC class. PC classes are NOT reserved for PCs. It's NPC classes that are reserved for NPCS (generally), while PC classes can be PCs or NPCs. What do you think that whole section on NPCs with PC class levels is about? Furthermore, you may not have noticed this, but in the change from 3.0 to 3.5, Leadership now gives you PC classed NPCs as your followers. And finally, check the demographics section, where you'll find it talks about the number of PC classes in any given town.
Any time you get someone that there are thousands of similar people then you start using NPC classes. PCs are by the nature of the game rare. Using crusaders in armies as anything other than a small number of PCs shows a fundamental failure to understand the difference in PCs and NPCs. Don't even get me started on having 7 3HD PC classed creatures.
Maybe that's what you do. But see Leadership, above. That does in fact give you PC classed followers. So what makes you think PC classes have to be rare? Maybe in your campaign that's the case, but as per page 139 of the DMG, there's plenty of PC classes running around. Sure, most people are NPCs, but PC classes are definitely out in force. Your statement that PC classes are reserved for PCs is clearly false. Assuming there's as many Crusaders as Clerics (which is the closest approximation I could figure, and is also the most conservative reasonable choice... if we assume they're like Fighters, it's much more) then the Average large town has 1 Level 6 Crusader, 2 level 3 Crusaders, 4 Level 2 Crusaders, and 8 Level 1 Crusaders available (roughly speaking of course, it's actually 1 Level 6.5 Crusader). Metropolises have far more, if those are in your games... the average metropolis would have 1 Level 18 Crusader, 1 Level 16 Crusader, 1 Level 15 Crusader, 1 Level 13 Crusader, 2 Level 9 Crusaders, 2 Level 8 Crusaders 2 Level 7 Crusaders, 2 Level 6 Crusaders, 8 Level 4 Crusaders, 8 Level 3 Crusaders, 16 Level 2 Crusaders, and 48 Level 1 Crusaders.
So the idea of managing, with a Diplomancer in the group, to pick up 120 level 1 Crusaders is pretty reasonable. That's how many we had in our army at least. We also had a decent number of Fighters and a few Marshals, Bards, and Binders.
Point being, you keep assuming all games are just like yours. That's the only fundamental lack of understanding here. You keep saying my logic only applies in TO games, but personally I think the logic that Fighters are bad at pretending to be something they're not and that a player can, in time, recruit a decent number of Crusaders by RAW is pretty darn standard to the rules of the game. Your ideas, such as that PC classes are reserved for PCs and power only matters in combat, seem very specific to your one style of play, which seems to be all kick in the door style combat with out of combat ignoring the rules completely in favor of diceless roleplaying while a bunch of spells are nerfed. That's fine for your games I'm sure, but please don't assume your house rules apply to everyone, or that everyone plays with your special demographics. I know I'd hate to be stuck in a game where a skillmonkey (which tends to be the kind of character I like to play, though these days it's usually Beguilers) doesn't get to shine because his skills are all ignored anyway and the Fighter can bluff merrily along without issues.
And Kaelik: The army was fighting other armies, not optimized PCs, but it was supported by a group of PCs. In the end, the PCs took out the rival high level NPCs while the armies clashed. And yes, it's hard to take out a whole army. Archery becomes a serious threat when there's so much of it, especially when Dispel Magics are being launched to counter enemy defenses. Yes, even level 1s are a threat when that many shots are going downrange.
I do like, however, that you call Shapechanging into a Solar bull, but turn around and claim your Wizard's move is to turn into an Astral Deva. Hypocrite, just a bit?
JaronK